Rotary drier.



R., W. G. & F. R. SIMON. ROTARY DRIER.

APPLICATION FILED 00124, 1911. 1,030,21 0. Patented June 18, 1912.

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R., W. G. & F. R. SIMON.

ROTARY DRIER.

'APPLIOATION FILED 001.4, 1911.

1,030,210, Patented June 18, 1912.

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COLUMBIA PLANOGRAPH (10.. WASHINGTON, D. c.

UNITED STATES PATENT OFFICE.

RICHARD SIMON, WILLIAM GEORGE SIMON, AND FREDERICK RICHARD SIMON, OF BASFOB-D, NOTTINGHAM, ENGLAND.

ROTARY DRIER.

' Specification of Letters Patent.

Application filed October 4, 1911.

To all whom it may concern:

Be it known that we, RICHARD SIMoN, WILLIAM GEORGE SIMON, and FREDERICK RICHARD SIMON, all subjects of the King of Great Britain, residing at Basford, Nottingham, England, have invented certainnew and useful Improvements in Rotary Driers, of which the following is a specification.

The object of our invention is to provide rotary drying machines with springs for taking up the tension or strain of one part of the apparatus and so relieve the other part when such machine or part thereof is under the influence of expansion or contraction due to heat or cold.

1 According to our invention We take a reel or fagot of internally heated tubes fixed in rigid heads, such as are used in some rotary drying machines. If bars be rigidly attached to such heads, then they will, as the heated tubes expand more than the bars, be in a state of tension. We therefore, instead of attaching the bars rigidly to the heads, connect them therewith by means of intermediate lengths of steel, suitably shaped and disposed to form and act as springs. If now, the tubes expand, the bars instead of pulling against bolts holding them in position, have only to pull against the springs which yield sufliciently to relieve the tension.

Our drawing, in which Figure 1 is a side elevation and Fig. 2 an end view, illustrates our invention.

In said drawing, A designates the angle bars and E the tubes which are included in or form part of the drier, the said bars and tubes being arranged parallel and the latter having their ends fixed in openings in the hollow heads D. These heads are provided with pairs of spaced peripheral lugs be tween which are loosely fitted the ends of the angle bars A, and said bar ends have attached thereto, by means of studs C, the outer ends of springs 0, here shown as of the leaf type, and as having their outer ends bent inwardly and introduced between the said bar ends and the peripheral walls of the heads, the inner ends of the springs being fastened by studs C to the aforesaid heads. The angle bars A are encircled by iron bands F that are rigidly secured thereto in any desired manner.

When steam is admitted to the tubes E, by well known means through the axles of the tube heads D, or one of them, the tubes are heated and increase in length, but the angle bars A which are not so heated do not so increase in length and are consequently in tension but as by our invention (instead of being held to the heads D rig idly by bolts, which would tend to shear off) they lie free in the spaces between the pairs of lugs B on the heads D, the difference in length is taken up by the springs C secured to the tube heads D by the studs C The rings F connect and bind all the angle bars into a rigid system so as to prevent bending strains on the studs C, being placed near the tube heads for that purpose.

What we do claim. as our invention and desire to secure by Letters Patent is 1. In a rotary drier, the combination, with a plurality of tubes, and a pair of hollow heads to which the ends' of said tubes are fixed; of a plurality of connected bars arranged parallel with said tubes and having their ends loosely supported upon said heads; and a plurality of springs secured at their inner ends to said heads and at their outer ends to the ends of said bars, to compensate for expansion and contraction of said tubes.

2. In a rotary drier, the combination, with a plurality of tubes, and a pair of hollow heads to which the ends of said tubes are fixed, said heads being provided with pairs of spaced peripheral lugs; of a plurality of bars arranged parallel with said tubes and having their ends loosely fitted between said lugs; and a plurality of springs secured at their inner ends to said.

heads and at their outer ends to the ends of said bars, to compensate for expansion and contraction of said tubes.

3. In a rotary drier, the combination, with a plurality of tubes, and a pair of hollow heads to which the ends of said tubes are fixed; of a plurality of connected bars arranged parallel with said tubes and having their-ends loosely supported upon said heads; and a plurality of leaf springs having their inner ends secured to said heads and their outer ends bent laterally inward and introduced between the peripheral walls of said heads and said bar ends and fastened to said bar ends.

In testimony whereof We have hereunto set our hands in presence of two subscribing 10 Witnesses.

RICHARD SIMON. IVILLIAM GEORGE SIMON. FREDERICK RICHARD SIMON.

Witnesses:

HORACE BUNN, TI-IOS. H. 000K.

Copies 01 this patent may be obtained for five cents each, by addressing the Commissioner of Patents, Washington, D. C. 

